Well if you like just running around and blast few mobs here and there at low diff, yeah you are technically correct, you are not forced to do anything.
It is just wierd to see this opinion in aRPG. This genre is (at least fom my PoV) about improving your char.
It is just saying D4 is arpg sandbox and respect players time is first time I saw this here.
I am currently playing new MMO (pretty classic P2W, log dailly or lossing rewards etc) and jeeeez I have feeling it respects my time more than D4 